using System.Net;
using System.Text.Json;
using JdeScoping.Client.Services;
using JdeScoping.Core.ApiContracts;
using JdeScoping.Core.ViewModels;
using RichardSzalay.MockHttp;
using Shouldly;

namespace JdeScoping.Client.Tests.Services;

public class LookupApiClientTests
{
    private readonly MockHttpMessageHandler _mockHttp;
    private readonly LookupApiClient _client;
    private static readonly JsonSerializerOptions JsonOptions = new()
    {
        PropertyNamingPolicy = JsonNamingPolicy.CamelCase
    };

    public LookupApiClientTests()
    {
        _mockHttp = new MockHttpMessageHandler();
        var httpClient = new HttpClient(_mockHttp) { BaseAddress = new Uri("http://localhost/") };
        _client = new LookupApiClient(httpClient);
    }

    // Route verification tests

    [Fact]
    public async Task FindItemsAsync_CallsCorrectRoute_WithQuery()
    {
        // Arrange
        var query = "TEST123";
        var expectedUrl = $"http://localhost/{ApiRoutes.Lookup.FindItems(query)}";
        var request = _mockHttp.Expect(HttpMethod.Get, expectedUrl)
            .Respond("application/json", "[]");

        // Act
        await _client.FindItemsAsync(query);

        // Assert
        _mockHttp.GetMatchCount(request).ShouldBe(1);
    }

    [Fact]
    public async Task FindProfitCentersAsync_CallsCorrectRoute()
    {
        // Arrange
        var query = "PC1";
        var request = _mockHttp.Expect(HttpMethod.Get, $"http://localhost/{ApiRoutes.Lookup.FindProfitCenters(query)}")
            .Respond("application/json", "[]");

        // Act
        await _client.FindProfitCentersAsync(query);

        // Assert
        _mockHttp.GetMatchCount(request).ShouldBe(1);
    }

    [Fact]
    public async Task FindWorkCentersAsync_CallsCorrectRoute()
    {
        // Arrange
        var query = "WC1";
        var request = _mockHttp.Expect(HttpMethod.Get, $"http://localhost/{ApiRoutes.Lookup.FindWorkCenters(query)}")
            .Respond("application/json", "[]");

        // Act
        await _client.FindWorkCentersAsync(query);

        // Assert
        _mockHttp.GetMatchCount(request).ShouldBe(1);
    }

    [Fact]
    public async Task FindOperatorsAsync_CallsCorrectRoute()
    {
        // Arrange
        var query = "John";
        var request = _mockHttp.Expect(HttpMethod.Get, $"http://localhost/{ApiRoutes.Lookup.FindOperators(query)}")
            .Respond("application/json", "[]");

        // Act
        await _client.FindOperatorsAsync(query);

        // Assert
        _mockHttp.GetMatchCount(request).ShouldBe(1);
    }

    // Query string encoding tests

    [Fact]
    public async Task FindItemsAsync_EncodesSpecialCharacters_InQueryString()
    {
        // Arrange - query with special characters that need URL encoding
        var query = "TEST&ITEM=1";
        var expectedUrl = $"http://localhost/{ApiRoutes.Lookup.FindItems(query)}";
        // The URL should have encoded & as %26 and = as %3D
        expectedUrl.ShouldContain("%26");
        expectedUrl.ShouldContain("%3D");

        var request = _mockHttp.Expect(HttpMethod.Get, expectedUrl)
            .Respond("application/json", "[]");

        // Act
        await _client.FindItemsAsync(query);

        // Assert
        _mockHttp.GetMatchCount(request).ShouldBe(1);
    }

    [Fact]
    public async Task FindItemsAsync_EncodesSpaces_InQueryString()
    {
        // Arrange - query with spaces
        var query = "TEST ITEM";
        var expectedUrl = $"http://localhost/{ApiRoutes.Lookup.FindItems(query)}";
        // The URL should have encoded space as %20
        expectedUrl.ShouldContain("%20");

        var request = _mockHttp.Expect(HttpMethod.Get, expectedUrl)
            .Respond("application/json", "[]");

        // Act
        await _client.FindItemsAsync(query);

        // Assert
        _mockHttp.GetMatchCount(request).ShouldBe(1);
    }

    // Success tests

    [Fact]
    public async Task FindItemsAsync_Success_ReturnsItemList()
    {
        // Arrange
        var items = new List<ItemViewModel>
        {
            new() { ItemNumber = "ITEM1", Description = "Item One" },
            new() { ItemNumber = "ITEM2", Description = "Item Two" }
        };
        _mockHttp.When(HttpMethod.Get, "*")
            .Respond("application/json", JsonSerializer.Serialize(items, JsonOptions));

        // Act
        var result = await _client.FindItemsAsync("ITEM");

        // Assert
        result.IsSuccess.ShouldBeTrue();
        result.Value.Count.ShouldBe(2);
        result.Value[0].ItemNumber.ShouldBe("ITEM1");
    }

    [Fact]
    public async Task FindOperatorsAsync_Success_ReturnsUserList()
    {
        // Arrange
        var users = new List<JdeUserViewModel>
        {
            new() { UserId = "USER1", FullName = "John Doe" }
        };
        _mockHttp.When(HttpMethod.Get, "*")
            .Respond("application/json", JsonSerializer.Serialize(users, JsonOptions));

        // Act
        var result = await _client.FindOperatorsAsync("John");

        // Assert
        result.IsSuccess.ShouldBeTrue();
        result.Value.Count.ShouldBe(1);
    }

    [Fact]
    public async Task FindProfitCentersAsync_Success_ReturnsProfitCenterList()
    {
        // Arrange
        var profitCenters = new List<ProfitCenterViewModel>
        {
            new() { Code = "PC001", Description = "Profit Center One" },
            new() { Code = "PC002", Description = "Profit Center Two" }
        };
        _mockHttp.When(HttpMethod.Get, "*")
            .Respond("application/json", JsonSerializer.Serialize(profitCenters, JsonOptions));

        // Act
        var result = await _client.FindProfitCentersAsync("PC");

        // Assert
        result.IsSuccess.ShouldBeTrue();
        result.Value.Count.ShouldBe(2);
        result.Value[0].Code.ShouldBe("PC001");
    }

    [Fact]
    public async Task FindWorkCentersAsync_Success_ReturnsWorkCenterList()
    {
        // Arrange
        var workCenters = new List<WorkCenterViewModel>
        {
            new() { Code = "WC001", Description = "Work Center One" }
        };
        _mockHttp.When(HttpMethod.Get, "*")
            .Respond("application/json", JsonSerializer.Serialize(workCenters, JsonOptions));

        // Act
        var result = await _client.FindWorkCentersAsync("WC");

        // Assert
        result.IsSuccess.ShouldBeTrue();
        result.Value.Count.ShouldBe(1);
        result.Value[0].Code.ShouldBe("WC001");
    }

    // Representative error test

    [Fact]
    public async Task FindItemsAsync_500_ReturnsError()
    {
        // Arrange
        _mockHttp.When(HttpMethod.Get, "*")
            .Respond(HttpStatusCode.InternalServerError, "text/plain", "Internal Server Error");

        // Act
        var result = await _client.FindItemsAsync("test");

        // Assert
        result.IsError.ShouldBeTrue();
        result.Error.StatusCode.ShouldBe(500);
    }
}